C_FILES += $(USBSLAVE)/usbin.c
C_FILES += $(USBSLAVE)/usbinit.c
C_FILES += $(USBSLAVE)/usblib.c
C_FILES += $(USBSLAVE)/usbmain.c
C_FILES += $(USBSLAVE)/usbout.c
C_FILES += $(USBSLAVE)/usbsetup.c
C_FILES += $(USBSLAVE)/interruptusb.c